WR450 to WR400??

4 replies to this topic
  • SID013

Posted October 06, 2008 - 01:53 AM


After spending most of my years riding in wide open fast tracks I have been riding in a lot of single trail gnarly stuff in the last 12 months & it is excellent fun. The only downside is the WR450 is physically exhausting for an old bloke like me. :lame: I have read some recent ride reports about the new KTM 400-EXC & have considered de-stroking & bringing the WR450 engine back to 400 specs as according to a friend who is a KTM manager this gives the bike a more managable power spread for tighter trail work whereas the KTM 450-EXC is an animal. I have heard of other riders doing this conversion to their WR450's has anyone had any experience with this as it would be a cheaper option than selling my '06 WR450 for a loss then buying a new KTM 400-EXC (If I could get one!) This conversion coupled with a slipper clutch may greatly make the bike a more manageable alternative for tight trails work.

Looking forward to your feedback

  • face_plant

Posted October 06, 2008 - 08:59 AM


here's what i learned 450 does not like "technical" i sumoed my wr
got my kx250 a little tuning and i got a "woods bike"
i am in perfect shape (round) it is fine and dandy to ride the 450 as a woods bike but being fast on the 450 dont work for me. unless its quad trails and open roads

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  • creeky

Posted October 06, 2008 - 09:53 AM


While my '00 WR400 is a very capable bike, my '05 KTM 450EXC is much easier to ride in any situation. I rode the EXC in Michigan sand last week for three days, about 250 miles, didn't even breath hard or get sore. The WR under similar conditions will wear me out.

  • SID013

Posted October 06, 2008 - 05:02 PM


Jeez Creeky, Still riding at 71!! I hope I still can at your age, makes me sound like an old woman complaining about my age at 47. :bonk:

That seems to be the general opinion on the WR450's that they are not suited for woods style riding. I have two mates who have '07 WR450's & they seem to be able to throw them around a lot better in the tight technical stuff. It could come down to the later model aluminium framed bikes having a lower centre of gravity. Having spent lots of $$$ in nearly 3 years on setting the suspension up, DRD pipe, Vortex ignition, Boyzen quickshot, etc I think I have gone as far as I can with this current bike. :lol: Maybe it is time to upgrade to a later bike after all, something a bit more suited to the type of riding I prefer to do.

Keep the good feedback coming through.:lame:

Cheers from Oz

  • Bamster

Posted October 07, 2008 - 04:43 AM


Trade it in for a wr 250. They are great in tight technical trails.
It won't beat the crap out of you like the big bore.


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